2151237113 has 2 divisors, whose sum is σ = 2151237114. Its totient is φ = 2151237112.

The previous prime is 2151237089. The next prime is 2151237119. The reversal of 2151237113 is 3117321512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1190733049 + 960504064 = 34507^2 + 30992^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151237113 is a prime.

It is a super-2 number, since 2×2151237113² = 9255642232697149538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2151237119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075618556 + 1075618557.

It is an arithmetic number, because the mean of its divisors is an integer number (1075618557).

Almost surely, 2^2151237113 is an apocalyptic number.

It is an amenable number.

2151237113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151237113 is an equidigital number, since it uses as much as digits as its factorization.

2151237113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 2151237113 is about 46381.4306916033. The cubic root of 2151237113 is about 1290.9103829499.

Adding to 2151237113 its reverse (3117321512), we get a palindrome (5268558625).

The spelling of 2151237113 in words is "two billion, one hundred fifty-one million, two hundred thirty-seven thousand, one hundred thirteen".